Anticreeping device.



Patented Dec. 16, 1913.

2 SHEETSSHEET 1.

witmeooa o W. W. HOLLAND. ANTIUREEPING DEVICE, APPLIOATION FILED SEPT.12,1913.

1,081,305. Patented Dec. 16, 1913.

2 SHEETSSHEET 2.

(lbbommg o till menses.

WILLIAM w. HOLLAND, or" ROLAND PARK, MARYLAND.

ANTICREEPING DEVICE.

Specification of Letters Patent,

PatentedDec. 16, 1913.

Application filed September 12, 1913. Serial No. 789,412.

H 0 all whom, it may concern:

Be it known that I, WILLIAM W. HOL- mnn, a citizen of the United States of America, residing at Roland Park, county of Baltimore, State of Maryland, have invented certain new and useful Improvements in Anticreeping Devices, of which the following is a specification.

An important dificult which has been en countered throughout t e entire history of the railroad art is that of securing the rails to the ties so that they will not creep or work lon 'itudinally, z. 6., in a direction at right ang es to the ties. With the increase in weight of modern locomotives and the parallel increase of the loads hauled, this difliculty has been greatly increased and at the present time the necessity for a device by means of which creeping of the rails can be substantially eliminated presents itself. That this may be supplied the applicant has evolved the anti-creeping device which is the subject of this application.

Described in general terms the invention consists in a series of cam-like clamping members arranged in pairs on the ties and on each side of the rail, the ivoting means consisting of an arcuate soc ret on each side of the rail and a correspondingly curved surface on the outer end of the clamping memher. In every instance the clamping memher is secured by a single bolt to the tie. in one modification this bolt is set between the rail and the center of rotation of the clamping member and carries a serrated block which engages a corresponding serrated surface on the clamping member, and in the other instance the bolt is at the center of rotation of the clamping member, in either case the serrated block may be dispensed with. The socket in its preferred form is made with its walls inclined inward from top to bottom toward the center of the socket and toward the rail, and the clampin member is similarly inclined as to its curve surfaces. However, these walls may be made straight as shown in Figures 5 and 6.

By consideration of Fig. i it will be noticed that the cam members are made of right and left-handed construction. Fort-her, these members are so placed that the radius is increased in the direction of the haul so that'any creeping of the rail will tend to bring the greatest diameter of the cam into en agement with the rail.

In the pre erred form of the invention the anthcreeping device is used in connection line.

with tie plates. These tie plates are provided with shoulders at each end of the plate or on each side of the rail, and each abutment is provided with a curved socket in which a corres ondingly curved end of the clamping mem er fits and rotates. The center about which each clamping member rotates is determined by the position and shape of the socket, and this may be concentric with the bolt which locks the positioning member in position or otherwise as between the bolt and socket. The clamping members are preferably arranged so that they engage the edges of the bottom flange of the rail, and they may be designed to take over this flange or they may be so arranged as to engage the web or other convenient portion of the rail, but the cam surface must take a bearing directly against a lateral surface onthe rail.

A device embodying my invention in the preferred form is shown in the accompanying drawing, in which-- Fig. 1 is a perspective View of a section of a rail together with a tie plate and two clamping members. Fig. 2 is a plan view of a clamping member, the edge of the rail flange being indicated by means of a dotted The clamping member is shown as mounted near the end of a tie plate, a portion of which is broken away for convenience in illustration. Fig. 3 is a bottom plan View of the clamping member, a portion of the bottom face of the locking block appearing through the slot the edge of the rail being indicated by a clotted line. Fig. 4 is a ver tical transverse section through a portion of the tie plate, the clamping member and looking block, the bolt being shown in elevation and a portion of the rail being shown in dotted lines. Figs. 5 and 6 are respectively a plan and vertical crosssection of a slightly modified form of the device, having the walls of the socket straight instead of inclined as shown in the previous figures. Figs. 7 and 8 are respectively a plan and vertical section of another form of the device in which the locking block is removed and the bolt is made concentric with the socket.

Referring to the drawings by numerals, each of which is used to indicate the same or similar parts in the diderent figures of thedrawings, the device as shown consists of a tie plate 1 having shoulders or abutments 2 at each end, the shoulders being inwardly disposed and faced toward the rail 3, the bottom flange 4 of which rests on ltltl the tie plate between the shoulders. the inner face 2 are concentric at a point 6, which point in Figs. 1 to 6 is between'the socket and the edge of the rail flange. The bottom of the socket is preferably in the plane of the surface 7 of the tie plate between the shoulders, upon which surface the rail is supported and shown as resting,on this surface on each side of the-rail flange is a cam-like clamping member or wed e 8. This clamping member has a curved slot being arcuate and concentric with the center 6 of the socket. The clamping member 8 is provided with a cam surface 11 eccentric in regard to the center 6 of the socket. Through this slot 10 is passed a locking bolt 12 shown in the form of a screw seated in the tie and serving in connection with the locking block 13 to lock the clamping member 8 in clamping position. To increase the effectiveness of the locking block, the

bottom face of the latter is serrated at 14- and the top surface of the clamping member is correspondingly serrated at 15. The

. cam surface 11 is in a way out under the clamping member'8, and projecting i'nward from the top edge of this surface is a flange 16 inclined as to its bottom face and serving to take over the edge of the rail flange to increase the security of the clamping effect.-

By reference to Fig. 4 it will be noted that the bottom face of the clamping member 8 is inclined upward from the socket end 9 to the cam surface, that is, its thickness is reduced from the end 9 to the cam surface. This is to permit the clamping member in a single form to be adapted to rails of various weights, for when so constructed, it will engage rail flanges of varying thickness.

Referring to Figs. 5 and 6 the device is quite similar to that shown in Fi s. 1 to 4 with the exception that the wal s of the socket 5 in the latter instance are made vertical, whereas in the first four figures they are inclined inward from bottom to top to increase the security with which the clamping member is held.

In Figs. 7 and 8 I have illustrated a clamping device which differs from that previously described in that the bolt 12 instead of being seated'in an arcuate slot as in the previous fi res, is passed through a hole 20 concentric with the socket, so

that the clamping member rotates about the bolt as a center and the arcuate slot is made unnecessary.

The manner of operating the device will be clearly understood from the preamble and description taken in connection with the drawings. 4 The rails are placed on the of each shoulder is acurved socket 5 preferably formed on an heel 9 to fit the socket 5 and is slotted at 10, the

tie plates, the wedges otcam-like clamp-- ing members 8 are dropped into place with their heels in the sockets of the tie' plates,

Preferably the cams are so placed that the 7 radius increases in the direction in which the majority'of the hauling is to take place, so that if the rail creeps slightly, the clamping effect would be merely increased.

The operation of the modified form of the device is but slightly different from that of the preferred form just described. The form shown in Figs. 5 and 6 varies as to the shape of the walls of-the socket 5, and this change is made for the purpose of securing greater economy of construction. The device of Figs. 7 and 8 differs from the preferred form in that the locking block is dispensed with and the clamping member is heldand rotated about a bolt which is also the center of the socket, the clam ing member is locked by merely tightening the bolt.

-While the device disclosed may be used on each tie this is not its intended application. Experience shows that a good arrangement is about six to thirty-three feet. However, this is an element to be determined by the engineer.

An important feature of the invention resides in the following relation between the clamping members 8 and the rails. As has been stated, the clamping members are arranged'in pairs one on each side of the rail, a pair of clamping members being supported by a single tie plate so that the sockets in which these clamping members swing and by which they are supported are rigidly connected, being formed in a single integral member. The clamping members forming a single pair are one of a righthanded and the other of a lefthanded construction, and they are so placed that the radius increases in the direction of the normal haul on the particularrail to which they are applied, so that if there is any tendency of the rail to creep from its origi= ,nal position, the clamping effect is immediately increased and the tendency to creep is overcome.

I have thus described specifically several embodiments of my invention in order that its nature and operation may be clearly understood. However, the specific terms herein are used descriptively rather than in their limiting sense and the scope of the nventlon is defined in the claims.

memos I claim:

' 1. In an anti-creeping device for traction rails, abutments on each side of the rail having arcuate sockets disposed toward the rail, cam shaped clamping members having heels in the sockets, the camsurfaces engaging the opposite sides of the rail, and means for locking the clamping members in clamped position.

2. In an anti-creeping device -for traction rails, abutments on each side of the rail having arcuate sockets disposed toward the rail, cam shaped clamping members having curved heels in the sockets, the cam surfaces engaging the opposite'sides of the rail, the

clamping members having an arcuate slot concentric with the socket, and a bolt engaging the slot for holding the clamping members in clamped position.

3. In an anti-creeping device for traction rails, abutments on each side of the rail having arcuate sockets disposed toward the rail, cam shaped clamping members having curved heels seated in the sockets, the cam surfaces engaging the opposite sides of the rail, the clamping members having arcuate slots concentric with the sockets, and a serrated surface on the clamping members, a block and a corresponding serrated surface on the bottom of the block to engage the surface on the clamping member, and,a bolt passing through each block and through the arcuate slotin the clamping member, and engaging the tie to lock the clamping members in clamped position.

4. In an anti-creeping device for traction rails, tie plates, abutments on each end of each t1e plate and on opposite sides of the rail, sockets in the abutments, cam-shaped clamping members having heels in the sockets, the cam surfaces engaging the opposite sides of the rail, and means for locking the clamping members in clamped position.

5. In an anti-creeping device for traction rails, tie plates, abutments on each end. of each tie plate and on opposite sides of the rails, sockets in the abutments, cam-shaped clamping members having heels in the sockets, the cam surfaces engaging the opposite sides of the rail, the clamping members having an arcuate slot concentric with the socket and a bolt enga ing the slot for holding the clamping mem ers in clamped position.

6. In an anti-creeping device for traction rails, tie plates, abutments on each end of each tie plate and on opposite sides of the rails, sockets in the abutments, cam-shaped clamping members having heels in the sock ets, the cam surfaces engaging the opposite sides of the rail, the clamping members having arcuate slots concentric with the sockets, and a serrated surface on the clamping memher, a block having a corresponding serrated surface on the bottom of the block to engage the serrated surface of the clamping member, and a bolt passing through each block and through the arcuate slot in the clamping member and engaging the tie to lock the clamping members in clamped position.

7 In an anti-creeping device for traction rails, tie plates, abutments on each end of each tie plate and on each side of the rail, the sockets in the abutments disposed toward the rail and having their bottom surfaces on the level with the rail supporting surface of the tie plate, cam-shaped clamping members having curved heels to rest in the sockets, the cam surface engaging the outer surface of the bottom flange of the rail and means for locking the clamping members in clamped position. i

8. In an anti-creeping device for tract-ion rails, tie plates, abutments on each end of each tie plate and on opposite sides of the rail, sockets in the abutments, and means for locking the clamping members in clamped position, the walls of the sockets being inclined inward from bottom to top and the corresponding surface of the cam shaped clamping member correspondingly inclined to prevent displacement of the clamping member.

9. In an anti-creeping device for traction rails, a tie plate upon which the rail rests leaving a portion of the plate exposed on each side of the rail, a socket at each end of the tie plate, a pair of cam-like clamping members, one bein of righthanded and the other being of left anded construction pivoted in the opposed sockets on each side of the rail and so disposed that their radiiincrease in the direction of normal haul on the rail, and means for locking the clamping members in clamped position. I

10. In an anti-creeping device for traction rails, a tie plate upon which the rail rests leaving a portion of the plate exposed on each side of the rail, an abutment at each end of the tie plate having a surface disposed toward the rail, a socket in each said abutment opening toward the rail, a pair of cam-like clamping members, one bein of righthanded and the other being of lefthanded construction pivoted in the opposed sockets on each side of the rail and so disposed that their radii increase in the direction of normal haul on the rail, and means for locking the clamping members in clamped position.

Signed by me at Baltimore, Md.,-this 11th day of September, 1913.

WILLIAM W. HOLLAND. Witnesses:

ZELLA KUI-IN, EDWIN F. SAMUELs. 

